package luanvan.app.foodnote.library;

import android.app.AlertDialog;
import android.app.Service;
import android.content.Context;
import android.content.DialogInterface;
import android.content.Intent;
import android.location.Location;
import android.location.LocationListener;
import android.location.LocationManager;
import android.os.Bundle;
import android.os.IBinder;
import android.provider.Settings;
import android.util.Log;
import android.widget.Toast;

public class GPSTracker extends Service implements LocationListener {
	private final Context mContext;
	
	// flag for GPS status
	boolean isGPSEnabled = false;
	
	// flag for network status
	boolean isNetworkEnabled = false;
	
	// flag for GPS status
	boolean canGetLocation = false;
	
	Location location;
	double latitude;
	double longitude;
	
	// The minimum distance to change Updates in meters
    private static final long MIN_DISTANCE_CHANGE_FOR_UPDATES = 10; // 10 meters
 
    // The minimum time between updates in milliseconds
    private static final long MIN_TIME_BW_UPDATES = 1000 * 60 * 1; // 1 minute
	
    // Declaring a Location Manager
    public LocationManager locationManager;
    
    public GPSTracker(Context context){
    	this.mContext = context;
    	getLocation();
    }
	public Location getLocation() {
		try {
			locationManager = (LocationManager) mContext.getSystemService(LOCATION_SERVICE);
			
			// getting GPS status
			isGPSEnabled = locationManager.isProviderEnabled(LocationManager.GPS_PROVIDER);
			
			//getting network status
			isNetworkEnabled = locationManager.isProviderEnabled(LocationManager.NETWORK_PROVIDER);
			
			if(!isGPSEnabled && !isNetworkEnabled){
				
			} else {
				this.canGetLocation = true;
				if(isNetworkEnabled){
					locationManager.requestLocationUpdates(LocationManager.NETWORK_PROVIDER, MIN_TIME_BW_UPDATES, MIN_DISTANCE_CHANGE_FOR_UPDATES, this);
					Log.d("Network", "Network is available");
					if(locationManager != null){
						location = locationManager.getLastKnownLocation(LocationManager.NETWORK_PROVIDER);
						if(location != null){
							latitude = location.getLatitude();
							longitude = location.getLongitude();
						}
					}
				}
				if(isGPSEnabled){
					if(location == null){
						locationManager.requestLocationUpdates(LocationManager.GPS_PROVIDER, MIN_TIME_BW_UPDATES, MIN_DISTANCE_CHANGE_FOR_UPDATES, this);
						Log.d("GPS Enabled", "GPS Enable");
						if(locationManager != null){
							location = locationManager.getLastKnownLocation(LocationManager.GPS_PROVIDER);
							if(location != null){
								latitude = location.getLatitude();
								longitude = location.getLongitude();
							}
						}
					}
				}
			}
			
		} catch (Exception e){
			e.printStackTrace();
		}
		return location;
	}
	
	public void stopUsingGPS(){
		if(locationManager != null){
			locationManager.removeUpdates(GPSTracker.this);
		}
	}
	public double getLatitude(){
		if(location != null){
			latitude = location.getLatitude();
		}
		return latitude;
	}
	public double getLongitude(){
		if(location != null){
			longitude = location.getLongitude();
		}
		return longitude;
	}
	public boolean canGetLocation(){
		return this.canGetLocation;
	}
	public void showSettingsAlert(){
        AlertDialog.Builder alertDialog = new AlertDialog.Builder(mContext);
 
        // Setting Dialog Title
        alertDialog.setTitle("GPS is settings");
 
        // Setting Dialog Message
        alertDialog.setMessage("GPS is not enabled. Do you want to go to settings menu?");
 
        // On pressing Settings button
        alertDialog.setPositiveButton("Settings", new DialogInterface.OnClickListener() {
            public void onClick(DialogInterface dialog,int which) {
                Intent intent = new Intent(Settings.ACTION_LOCATION_SOURCE_SETTINGS);
                mContext.startActivity(intent);
            }
        });
 
        // on pressing cancel button
        alertDialog.setNegativeButton("Cancel", new DialogInterface.OnClickListener() {
            public void onClick(DialogInterface dialog, int which) {
            dialog.cancel();
            }
        });
 
        // Showing Alert Message
        alertDialog.show();
    }
	@Override
	public void onLocationChanged(Location location) {
		latitude = location.getLatitude();
		longitude = location.getLongitude();
		Toast.makeText(mContext, "Your Location is - \nLat: " + latitude + "\nLong: " + longitude, Toast.LENGTH_LONG).show();
	}

	@Override
	public void onProviderDisabled(String provider) {
		// TODO Auto-generated method stub
		
	}

	@Override
	public void onProviderEnabled(String provider) {
		// TODO Auto-generated method stub
		
	}

	@Override
	public void onStatusChanged(String provider, int status, Bundle extras) {
		// TODO Auto-generated method stub
		
	}

	@Override
	public IBinder onBind(Intent intent) {
		// TODO Auto-generated method stub
		return null;
	}

}
